Tool-grinder



(Model.)

B. O. PHILLIPS.

TOOL GRINDER.

No. 451,515. Patented May 5,1891.

m5 Nomus FKTERS co., mnm-uma, msmanwn, u. c.

UNITED STATES PATENT OFFICE.

ELIV OOD C. PHILLIPS, OF CHICAGO, ILLINOIS.

TOOL-GRINDER.

SPECIFICATION forming part of Letters Patent No. 451,515, dated May 5,1891. Application filed December 24, 1890. Serial No. 375,660. (Model)T0 on whom it may concern.-

Be it known that I, ELWooD C. PHILLIPS, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Tool Grinders; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

The object of this invention is to provide a convenient knife-sharpeningdevice, whereby the motion of the knife endwise will cause the rotationof a sharpening-wheel bearing against the blade. This object I attain bysuspending the knife in a clamping device which moves withareciprocating rod having a cord attached thereto, whereby thesharpening-wheel is rotated.

My invention consists in the combination of the above-mentioned devices,and in certain details of construction hereinafter set forth andclaimed.

Figure 1 represents a plan view of the knife-sharpening devicesembodying my invention, the knife being shown in full lines in positionfor sharpening one side of the edge and in dotted lines in position forsharpening the other side of the edge. Fig. 2 represents an elevation atright angles to Fig. 1, taken from the side of the clamp, the knifebeing removed. Fig. 3 represents a view similar to Fig. 1, but ithoutthe knife-supports. Figs. 4 and 5 represent in detail the knifeholdingdevices. Fig. 6 represents a section of the emery-wheel with its shaft,and Figs. 7 and 8 are detail views of the devices for operating theemery-wheel.

A designates an upright or standard provided below with a handle 6L2,and tapering above, as indicated at a. Arigid horizontal arm a,preferably cast with said standard, extends from its middle part and isprovided with guide-lugs A for a horizontal rod 0, longer than said arm.A double-grooved pulley b is mounted freely on a small stud b on thefront of said arm near said standard. A

'short spindle D, extending out from said standard below said arm andparallel thereto, has a spool D sleeved on 1t, carrying 011 it anemery-wheel E for sharpening knives and other tools. Two cords B and Bextend from lugs c and c, raised on the ends of rod 0, and pass aroundpulley b in opposite directions, their inner ends being attached to andwinding on the spool D. A knife II is suspended from said rod by aclamping device in position to have one side of its edge ground by saidwheel. As said knife is moved endwise to the left, the rod 0 moves withit and the cord B unwinds from the spool D, rotating said spool andsharpening-wheel against the progressively advancing knife edge. \Vhenthe knife is drawn back, the cord B does the rotating and sharpening. Ineither case the cord B or 13 not actively turning said spool is woundthereon. When one side of the edge is sufficiently sharpened, the knifeand clamp may be reversed, as shown in dotted lines in Fig. 1, tosharpen the other side of the edge.

I do not desire to confine myself to the particular form of knife-clampshown, although it is very well adapted to its purpose and such as Iprefer. From a link-bar 0, fast at one end on rod 0, a stud a near itsother and lower end extends out laterally. On this stud I mount a pairof bars C, free for turning. Between the lower ends of said bars I pivotan upwardly-closingtongue F, the open position of which is shown bydotted lines in Fig. 4, and between the upper ends of said bars I pivota downwardly-closing tongue f. These two reversely-closing tongues clampthe knifeblade against the bars 0, a screw 0 being employed to bind thesaid parts together. A long shoulder c on the lower end of the bar 0'prevents the knifeblade from turning backward too far.

Having thus described my invention, whatI claim as new, and desire tosecure by Letters Patent, is

1. An endwise-movable support for aknife or other tool, in combinationwith a rotatory sharpening-wheel geared to said support in order thatthe endwise motion of the knife may-cause such rotation.

2. The standard A and arm a, in combination with rod 0, movable endwisein guides on said arm, the cords B and B, attached to the opposite endsof said bar, the spool D, on which said cords wind in oppositedirections,

the sharpening-whecl E, carried by said spool, and a knife-clampattached to and moving with said rod, substantially as set forth.

3. The knife-clamp consisting of bars 0, 5 reversely-folding tongues Ff, and screws a",

substantially as set forth.

d. The link-bar C, provided with shoulder 0" to prevent the knife-bladefrom turning backward too far, a lateral stud c, and a IO knife-clampsuspended from said stud and capable of being reversed, as shown.

5. An 0l1d\\'iSGl1lOVtl)iO knifesupport providcd with rmersely-actingcords,in combination with a sharpening-wheel rotated by said cord, adouble-grooved pulley guiding said cord, and a supporting-standard forsaid devices, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ELWOOD (J. PHILLIPS. Witnesses:

(.71. V. IIINKLEY, F. ll. FEY.

